Robust half-metallic ferromagnetism and curvature dependent magnetic coupling in fluorinated boron nitride nanotubes.

The fluorinated boron nitride (F-BN) nanostructures are found to be fully spin polarized and half-metallic by means of first-principles calculations based on the Heyd-Scuseria-Ernzerhof hybrid functional. It is found that the full spin polarization and 1 μB local moment in F-BN nanotubes are independent of tube radius and it is also robust in planar ribbons and sheets. The long-ranged ferromagnetic coupling between local moments decreases with decreasing tube radius.

[Protection of polysaccharide ATPS-2 from Armillariella tabescens on immunological liver injury in mice induced by BCG plus LPS].

Objective: To observe the effect of polysaccharide ATPS-2 from Armillariella tabescens on the immunological liver injury in mice induced by BCG plus LPS.

Method: BCG and LPS were adopted to establish BCG plus LPS liver injury model in mice. The content of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and NO, the activity of superoxide dismutase (SOD) and malondiadehyde (MDA) content of liver homogenate in mice were measured by colorimetric method.

[Protection of polysaccharides-2b from mudan cortex of Paeonia suffruticosa andr on diabetic cataract in rats].

Objective: To observe the the protective effection of polysaccharides-2b of mudan cortex of Paeonia suffruticosa andr (PSM2b) on diabetic cataract.

Method: The animal model of diabetic cataract in rats was induced by streptozotocin (STZ) and freund's adjuvant complete (CFA). The initial opacity occurrence time in lens was investigated with cranny lamp, and opacity degree of lens was compared too.